/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/NiagaraGraph.h
Gets the meta-data associated with this variable, if it exists.
[TOptional](API\Runtime\Core\IO\TOptional)< [FNiagaraVariableMetaData](API\Plugins\Niagara\FNiagaraVariableMetaData) > GetMetaData ( const [FNiagaraVariable](API\Plugins\Niagara\FNiagaraVariable) & InVar ) const